Help me find a video conversion app

[skateboardsteve]

I have an app that creates 4k .AVI files, I need an app that can batch convert those file and convert them to .mp4, I found ICONV, which works great but it will not output 4K files, any recommendations?

 

[Aerofly]

I’m not sure about an app, but you could probably do it on a PC using “Handbrake”.
I use Handbrake myself as it’s a ‘lossless’ converter which means there’s no loss of video quality in the conversion.